Bethany had only been on the A3 about 5 minutes when I shot this clip of her outrunning Annette on the S3. (Apologies for the video quality - Google seem to have butchered it during the upload)
And here is a short, hand-held video taken while riding the S3 at the "Spring into Oxford" show. At slow speed, the S3 produces a much smoother video than walking. Now all I need is a gimble setup and it will all be sweet.